Internal-combustion motor.



I. STIMPSON, In. INTERNAL COMBUSTION MOTOR;

APPLICATION FILED JULY 9. I917.

Patented Feb. 26, 1918.

JAM

THOMAS STIMPSON, JR, 011 ANAMOSA, IOWA.

INTERNAL-COMBUSTION MOTOR.

Specification of Letters Patent.

Patented Feb. 26, 1918.

Application filed July 9, 1917. Serial No. 179,505.

To all whom it may concern:

Be it known that I, THOMAS S'rrMPsoN, Jr., a citizen of the UnitedStates of America, and resident of Anamosa, in the county of Jones andState of Iowa, have invented certain new and useful Improvements inInternal-Combustion Motors, of which the following is a specification.

This invention relates to internal combustion motors and particularly tomeans for preventing fouling of the cylinders or the interior of thecrank cases of such motors. v

An object of this invention is to provide novel means for collecting anddischarging condensed fuel or excessive oil which might be present inthe cylinders of internal combustion motors and also the collection andremoval of any foreign substances such as cuttings or metal removed ordislodged from the interior of the cylinders, either from the pistons orthe wall of the cylinder, thus making it possible to prevent fouling ofthe working parts of such a motor.

In motors, which depend upon kerosene as a basis of the explosivecharge, the condensation of the fuel in the combustion chamber is rathergreat and this is particularly true with motors used on tractors wherethe load is varying frequently and the invention is particularlyadvantageous in connection with two cycle engines or motors of this typeas it will prevent burning gases that may be forced past the rings fromentering into the mixing chamber usually the crank case and ignitinggases being mixed and compressed in the mixing chamber; it also preventsthe passage of the explosive fuel into the crank case or to thelubricating oil reservoir thus preventing the thinning of the said oilas now frequently happens where no provision is made between the pistonand cylinder for arresting the fuel.

I/Vhen compression becomes weak in two cycle engines their operation isgreatly impaired since the gas. or fuel passing into the lubricatingsystem further aids in reducing the compression which a heavier oil orunimpaired oil might produce, and so it is the purpose to so improve aninternal cornbustion motor as to obviate compression troubles whicharise by reason of the conditions set forth.

In the provision of means for collecting excessive lubricant condensedfuel and for.- eign substances which would have a tend ency to abrade ordamage the piston rings or the cylinder walls, the internal combustionmotors are increased in eliiciency and durability.

l/Vith the foregoing and other objects in wow, the invention consists inthe details of construction, and in the arrangement and combination ofparts to be'hereinafter more fully set forth and claimed. 7

In describing the invention in detail, reference will be had to theaccompanying drawings forming part of this specification wherein likecharacters denote corresponding parts in the several views, and ,inwhich Figure 1 illustrates a sectional view of an explosive motor withmy invention applied thereto;

Fig. 2 illustrates a sectional view on a line corresponding with theline 2-2 of Fig. l, the base and parts associated therewith beingomitted;

Fig. 3 illustrates an enlarged detail sectional view of a fragment ofthe cylinder; and

Fig. i illustrates a sectional view of a cylinder embracing amodification.

In these drawings 6 denotes a cylinder, the

wall of which is provided with a circumferential groove 7, the ends ofwhich are spaced apart at the top of the cylinder so as to produce anunbroken cylinder wall 8, the purpose of which is to permit lubricant tofind its way longitudinally of the cylinder over the surface which isuninterrupted. This construction is employed particularly in motors ofthe four cycle type.

The cylinder wall has a port 9 transversely thereof and the said portregisters or communicates with the groove so that liquid or metaldeposits reaching the said groove will gravitate to the port 9 and be.forced to the port 9 when the piston is being operated so that thecylinder is freed of such liquid and foreign substances.

A discharge pipe 11 communicates with the port 9 and may lead to anysuitable receptacle or it may lead to a waste pipe.

The groove 7 r is preferably of the half-V type although under certainconditions, the groove may be of the V-type or U- haped or of any otherconfiguration and grooves of different configuration would be regardedas mechanical equivalents.

A piston 12 of any appropriate type operates in conjunction with thecylinder and piston rings 15 are carried by the said piston. T hearrangement which is preferable is to have the groove in alineinent oreven with the second from the rear end of a series of piston rings whenthe piston is in its forward position.

In the modification shown in Fig. l, the cylinder A has acircumferential groove B extending entirely around the cylinder but thegroove preferably increases in deptl from the top to the bottom of thecylinder and in this type provision is made for the discharge of theliquid or foreign substance through the port C and the pipe D.

The device can be used in a motor when in a horizontal or inclinedposition it bein understood that the cylinder shall. be placed inposition so that the deepest portion of the groove is lowermost tofacilitate gravitation and the discharge of foreign substances.

Copies of this patent may be obtained for five cents each, by addressingthe The construction, operation and advan tages will it is thought, heunderstood from the foregoing description, it being understood thatvarious changes in the proportions and details may be made Withoutdeparting from the scope of the invention set forth in the appendedclaim.

I claim:

In an explosive motor having a cylinder inclined to the vertical, acircumferential drain groove therein, said groove terminating on eachside of the top of the cylinder, said top Wall being uninterrupted topermit oil to pass the entire length of the cylinder, said groove lyingin such relation to the piston that the groove is alway closed by thepiston, and a pipe directly connected to the. lowest point in the groovewhereby for eign matter is discharged from the cylinder.

THOMAS STIMPSON, J 1:.

Commissioner of Patents,

Washington, I G.

